John b



nitrh gratas @anni @fitta JOHN DUGHESNE, OF LAGON, ILLINOIS.

Letters Patent N0. 78,582, dated .me 2, 1868.

IMPROIZEIVIENT IN SIDE-GEAR FOR THRESING-MAGHINES.

TO ALL WHOM IT MAY CONGERN:

Be it known that I, JOHN DUCHESNE, of Lacon, in the county of Marshall, and State of Illinois, have invented an Improved Side-Gear for Threshing-Machines; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accomypanying drawings, and letters of reference marked thereon, making a part of this specification, of which- Figure 1 is a plan View, i

Figure 2 a side elevation',

Figure a view of the coverings of the gears, and

Figure 4 a plan view of the foot-plate.

This invention consists of a mechanism for eiecting the connection between a horse-power and a threshingmachine, such that the position of the one may be changed, when desired, without moving the other, as will hereinafter more fully appear.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construea tion and operation.

A represents the frame of a threshing-machinef a represents the cylinder whence motion is communicated to the working parts. YOne of the journals of said cylinder is prolonged, so as to project beyond the cross-beam b, in which it rests, and to the projecting en d a pinion, c, is attached, which gears with a spur-wheel, d, placeclon the upper end of a. vertical shaft, e, said shaft being at right angles with the axis of the pinion c. The shaft e is stepped in the circular foot-plate h, which forms the upper part of the bracket z, secured to the lower portion of one side of the frame A.

A vertical swivelling-post, c, is loosely attached, by means of lugs 7c 1c', to the shaft e. To the lower part of said shaft, just above the lower lug cioi' the post 7c, is rigidly attached a pinion, z', which gears with the spur-wheel Z, which has its axis at thercentre ofthe swivelling-post c, the said axis passing horizontally through said post, and projecting beyond the same far enough to present a point of attachment, Z, to the tumbling-rod of a horse-power.

It will be perceived that the power, thus derived by the axle Z, is communicated, by the gearing Zt'e cZ and the shaft e, to the cylinder a, and that, by means of'this gearing, the speed of said cylinder is greatly increased, as compared with that of the axle Z.

m represents a spring-bar, projecting downward from the lower end ofthe swivellingpost Zt. m represents depressions in the periphery of the circular foot-plate h, of a size to receive the said springbar. When the latter rests in one of the said depressions, the swivelling-post isthereby locked.

During the process of threshing it is sometimes found desirable to change the position of the separator, as, for instance., when the w'ind shifts, so as to prevent the straw from coming out of the tail of the machine. It is obvious that if this can be done without changing the position of the horse-power, a great saving of time and iabor will be eiected. By the common system of connecting the horsepower and separator this cannot be, done, but, by the use of my invention, it can easily be done, as it is only necessary to unlock the swivellingpost with which the horse-power is connected by withdrawing the spring-bar m from that one of the depressions m in which it may happen at the time to be resting, and swing the frame A, with its separating-machinery, round on the swivelling-post as a pivot.

For the protection of the machinery, I place the cap n over the gearing c d, and the case o over the gear'- ing Zz', the latter admitting of being drawn on or oit` at pleasure, by means of slots 1', which are covered by the-lugs c c, when the case is in position. i

I-Iaving thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The swivelling-post 7c, for the purpose of rendering the connection between a horse-power and separator adjustable, substantially as described.

set forth;

3. The combination` of thev stvivellio'g-post k with` tho gearingllo'vc d, :Im-d shaft aQzmd for tho purposo set forth. I v

4. The cap n, in"comliiato with th ygearing c d, as aud"for thopurpose sot-forth. A 5. The slotted case o, in combination with the gearig l and swvelliugpost k, as and for the purpose set forth.

" JOHN DUCHESNE.

Witnesses r:

JOHN B. DUcnEsNE, JAMES SWEENY.v

2. The combnatonof the swivolling-post 7:,-spring-rm m, and notched foot-plato h, as and fo;` the purposeI 

